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RESEARCH PRODUCT
Conditions for achieving invisibility of hyperbolic multilayered nanotubes
Carlos J. Zapata-rodríguezMahin NaserpourCarlos Díaz-aviñósubject
PermittivityNanotubeMaterials scienceCondensed matter physicsScatteringMetamaterialPhysics::OpticsFOS: Physical sciencesNear and far field01 natural sciencesAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic Materials010309 opticsCore (optical fiber)Condensed Matter::Materials Science0103 physical sciencesTensorElectrical and Electronic EngineeringPhysical and Theoretical Chemistry010306 general physicsDispersion (water waves)Physics - OpticsOptics (physics.optics)description
Invisibility of nanotubes has recently been demonstrated in highly anisotropic metamaterials in the transition regime from hyperbolic to elliptic dispersion [Sci. Rep. 5 (2015) 16027]. In such study, the characterization of a realistic multilayered metamaterial was carried out by means of an effective medium approach providing average components of the permittivity tensor and wave fields. Here, the edge effects of the metal-dielectric stratified nanotube for different combinations were thoroughly analyzed. We show how the boundary layers, which in principle remain fully irrelevant in the estimation of the effective permittivity of the nanotube, however play a critical role in the scattering spectra and the near field patterns. A dramatic enhancement of the scattered wave field is unexpectedly experienced at the frequencies of interest when a dielectric layer is chosen to be in contact with the cavity core.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-03-28 |